EP 1384945 A1 20040128 - Pressurised steam boilers and their control
Title (en)
Pressurised steam boilers and their control
Title (de)
Druckdampferzeuger und dessen Steuerung
Title (fr)
Chaudières à vapeur sous pression et leur commande
Publication
Application
Priority
- EP 02720166 A 20020402
- GB 0108229 A 20010402
Abstract (en)
A method and apparatus for monitoring the level of water in a pressurised steam boiler (50). The method includes the steps of providing a pair of capacitance probe assemblies (58A, 58B) mounted in the boiler, with each of the probes extending through a range of water levels. The probes (71) are arranged such that the capacitance of each probe (71) varies according to the level of water. The method also includes the step of measuring the capacitance of each probe (71), comparing the capacitances to one another to check that they match and using the measurement of the capacitance as an indication of the water level. <IMAGE>
IPC 1-7
IPC 8 full level
F22B 37/78 (2006.01); F22D 5/30 (2006.01)
CPC (source: EP US)
F22B 37/78 (2013.01 - EP US); F22D 5/30 (2013.01 - EP US)
Citation (search report)
- [A] GB 2170331 A 19860730 - WARD IND PLANT LIMITED T W
- [A] US 6078729 A 20000620 - KOPEL ZEV [CA]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
GB 0108229 D0 20010523; GB 2374135 A 20021009; AT E279687 T1 20041015; AT E288566 T1 20050215; AT E289399 T1 20050315; AT E289669 T1 20050315; AU 2002251236 A1 20021015; DE 60201594 D1 20041118; DE 60201594 T2 20060309; DE 60202855 D1 20050310; DE 60202855 T2 20060330; DE 60203002 D1 20050324; DE 60203002 T2 20060112; DE 60203040 D1 20050331; DE 60203040 T2 20060413; EP 1373796 A2 20040102; EP 1373796 B1 20050202; EP 1384944 A1 20040128; EP 1384944 B1 20041013; EP 1384945 A1 20040128; EP 1384945 B1 20050223; EP 1384946 A1 20040128; EP 1384946 B1 20050216; US 2004069249 A1 20040415; US 7249573 B2 20070731; WO 02079695 A2 20021010; WO 02079695 A3 20030206
DOCDB simple family (application)
GB 0108229 A 20010402; AT 02720166 T 20020402; AT 03023289 T 20020402; AT 03023290 T 20020402; AT 03023291 T 20020402; AU 2002251236 A 20020402; DE 60201594 T 20020402; DE 60202855 T 20020402; DE 60203002 T 20020402; DE 60203040 T 20020402; EP 02720166 A 20020402; EP 03023289 A 20020402; EP 03023290 A 20020402; EP 03023291 A 20020402; GB 0201547 W 20020402; US 41693003 A 20030818